public class KeyDemo04 {
    public static void main(String[] args){
        //shift+F6相关联的所有变量
        for(int index=0;index<3;index++) {
            if(index==2){
                System.out.println(index);
            }
        }

        int area = getArea(3, 4);

    }

    public static int getArea(int length, int width) {
        return length * width;
    }


}
